Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Udo Island lies just off the eastern coast of Jeju Island, South Korea, reached by a short ferry crossing from Seongsan. It is a volcanic island known above water for its beaches and coastal scenery, formed as part of Jeju's larger volcanic geology. Divers exploring the waters around the island have reported encounters with manta rays.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Manta rayManta rayReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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